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Alg 3.4: Solving 3x3 Linear Systems using Matrices - Intro example

Here we generalize our techniques from 2x2 systems to 3x3 systems.

From  Sean Sanford on July 13th, 2020 0 plays 0  

3.4: Intro to Matrices

Here we use a 2x2 linear system to show how matrices can be used to streamline the elimination technique.

From  Sean Sanford on June 26th, 2020 0 plays 0  

Episode 4 (S&P 1.2): Set Operations, Union and Intersection

Here we talk about two operations: union and intersection. These are ways of combining sets to make new sets.

From  Sean Sanford on June 24th, 2020 0 plays 0  

Episode 5 (S&P 1.2): Complements and Universes

Here we discuss universal sets, or universes, and explain what it means to take a complement of a set with respect to a given universe.

From  Sean Sanford on June 24th, 2020 0 plays 0  

Episode 3 (S&P 1.1): The Empty Set

Here we discuss what it means for a set to be empty. We give several examples of empty sets, and make an argument for why we should think of them all as THE Empty Set.

From  Sean Sanford on June 22nd, 2020 0 plays 0  

Episode 2 (S&P 1.1): Subsets

Here we present the idea of subsets. Several examples are given.

From  Sean Sanford on June 22nd, 2020 0 plays 0  

Episode 1 (S&P 1.1): What is a Set?

Here we give the definition of a set, and give some examples.

From  Sean Sanford on June 22nd, 2020 0 plays 0  

Alg 4.5: Warehouse Example, p3

Here we finish the warehouse example, by investigating the values of the objective function.

From  Sean Sanford on April 29th, 2020 2 plays 0  

Alg 4.5: Warehouse Example, pt2

Here we continue the example from the previous video.

From  Sean Sanford on April 29th, 2020 3 plays 0  

Alg 4.5: Intro to Linear Programming

Here we introduce the idea of Linear Programming, and begin an example.

From  Sean Sanford on April 29th, 2020 3 plays 0  

Alg 4.4: The Cafeteria Problem

Here we work through a word problem about buying tables for a cafeteria. This problem is similar to [4.4, Example 4, pages 244-245] in your textbook, so please take a look and compare. Here is the…

From  Sean Sanford on April 27th, 2020 2 plays 0  

Alg 4.4: A System of Three Inequalities (pt2)

Here we continue the example from pt1. This time we use the addition method to verify the coordinates of the last point of the triangle.

From  Sean Sanford on April 27th, 2020 2 plays 0  

Alg 4.4: A System of Three Inequalities (pt1)

Here we graph a system of three inequalities. We also do some algebra to verify the coordinates of a certain point.

From  Sean Sanford on April 27th, 2020 2 plays 0  

Alg 4.4: Systems of Inequalities Intro

Here we introduce the idea of graphing systems of inequalities. A short example is given.

From  Sean Sanford on April 27th, 2020 2 plays 0  

Alg 4.3: Inequalities in Two Variables

Here we discuss how to graph inequalities in two variables.

From  Sean Sanford on April 23rd, 2020 2 plays 0  

Alg 4.1: All About Intervals

Here we introduce interval notation, and give several examples. We also discuss what happens when we take the intersection or the union of two intervals.

From  Sean Sanford on April 22nd, 2020 2 plays 0  

Alg 4.1: Graphing a Compound Inequality

Here we simplify and graph a compound inequality.

From  Sean Sanford on April 22nd, 2020 2 plays 0  

Alg 4.1: Graphing an Inequality on a Number Line

Here we go through a short example of graphing an inequality on a number line.

From  Sean Sanford on April 22nd, 2020 2 plays 0  

Alg 4.1: Linear Inequalities Intro

Here we introduce inequalities, and discuss an example where dividing by a negative forces us to flip the sign.

From  Sean Sanford on April 22nd, 2020 3 plays 0